Recent content by Braman

As much as I can and as often as I can. YOu did have a sealed room previously and it resulted in molding, condensation?. And how did it raise heat?

I wonder of one thing. I just ordered one COB cxb 3590. And seller told me its is a CD bin (top bin, right?). How could I know if he is not lying? Only by measuring light strenght?

I would like to use 3/4 of mentioned space with 12 COBs. If I`d run hps, i would need about 3x400w hps or 3x250, thats about 1350w/850w from wall, I cannot make such a high electrical bill. Running 12 COBs I am planing to run on 700ma, thats about 300W from wall. Now I am confused.. I could...

Hello! I have read some posts about ventilation and could not find any compromising answer. I have 1.7x 1.7 x 1.8 meter room.Now it is about +15C in that room, in winter it gets down to about +5 C. To heat up i will be using electric heater. I will be running LEDs( NOOO, dont sugest me to run...

Could You write an example, please?

I ordered from alibaba, so the only things I know are - 3500K CXB 3590 80 CRI 36V Is there a meaningful diference between top bin and lower bin cxb 3590? Like, they are not worth buying them?

I will start at 0.7a and experiment :) Simpliest way to check amperage would be just inputing and ampmeter, then dimm up to my needs? I wonder of one thing. I just ordered one COB. And seller told me its is a CD bin. How could I know if he is not lying? Only by measuring light strenght?

So, the amperege range would be nicer, right? 0.67 ~ 1.12A

Is this a right choice - HLN-40H-42B for ONE 36V cxb 3590? And I can dimm amperege from 0.58 to 0.96 ma, right?

COB i am going to run is cxb 3590 36V.

LPV-35-36. This would be perfect for one 36v COB @ 1000ma in a aprox. feet by feet grow..just for fun and experiments?

I am looking at Meanwell driver - HLG-185H-C700A. Can i RUN just one 36V COB with this? As I understand COB will "eat" voltage as much as it needs and driver will give just 700 ma? I mean if the min V is higher that 36V, I cannot use it for 36V COB? Or i should just ask - what driver is...

Could some one explain me, how is efficency calculated.. that for example cxb 3590 36V is more efficient @ 1400ma or 1000ma than it is @ 2000ma. Can that information be found in datasheet or somewhere?

I will, but shortly - Is it possible by using dimmable drivers? And you just measure amps inserting ampmeter between COB and driver, then adjust your dimmer OR just driver is so selected, than LED jus get your mentioned amps? Every LED is more efficient at lower current... that made me think a...

I just watched "growmou5" video on his grow, where he used, as i understand, 32 these COBs. So he writes that it uses 850w all together, I dont understand it now, because datasheet says, that one 36V LED takes 2400mah, that is 2.4 amps, right? So whats the power formula? Power = voltage x...